From: Stephen Boyd <sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
To: Viresh Kumar <viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Rafael Wysocki <rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org>,
nm-l0cyMroinI0@public.gmane.org,
Viresh Kumar <vireshk-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linaro-kernel-cunTk1MwBs8s++Sfvej+rw@public.gmane.org,
linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Vincent Guittot
<vincent.guittot-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
d-gerlach-l0cyMroinI0@public.gmane.org,
broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH V4 10/10] PM / OPP: Don't assume platform doesn't have regulators
Date: Mon, 28 Nov 2016 17:18:10 -0800 [thread overview]
Message-ID: <20161129011810.GW6095@codeaurora.org> (raw)
In-Reply-To: <82cc855c7abb5d0583abe4cc9132c7e589434814.1479986492.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
On 11/24, Viresh Kumar wrote:
> If the regulators aren't set explicitly by the platform, the OPP core
> assumes that the platform doesn't have any regulator and uses the
> clk-only callback.
>
> If the platform failed to register a regulator with the core, then this
> can turn out to be a dangerous assumption as the OPP core will try to
> change clk without changing regulators.
>
> Handle that properly by making sure that the DT didn't have any entries
> for supply voltages as well.
>
> Signed-off-by: Viresh Kumar <viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
> ---
Reviewed-by: Stephen Boyd <sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
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next prev parent reply other threads:[~2016-11-29 1:18 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-24 11:36 [PATCH V4 00/10] PM / OPP: Multiple regulator support Viresh Kumar
2016-11-24 11:36 ` [PATCH V4 01/10] PM / OPP: Fix incorrect cpu-supply property in binding Viresh Kumar
2016-11-24 11:36 ` [PATCH V4 02/10] PM / OPP: Reword binding supporting multiple regulators per device Viresh Kumar
2016-11-24 11:36 ` [PATCH V4 03/10] PM / OPP: Don't use OPP structure outside of rcu protected section Viresh Kumar
[not found] ` <7817d2d3ccc77680c6e40101e80d201794398693.1479986491.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-11-29 0:57 ` Stephen Boyd
2016-11-24 11:36 ` [PATCH V4 04/10] PM / OPP: Manage supply's voltage/current in a separate structure Viresh Kumar
2016-11-29 0:58 ` Stephen Boyd
2016-11-24 11:36 ` [PATCH V4 05/10] PM / OPP: Pass struct dev_pm_opp_supply to _set_opp_voltage() Viresh Kumar
[not found] ` <d71095ecb8e8dde5861e73f2b8df8955f2e2fb9c.1479986491.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-11-29 0:59 ` Stephen Boyd
2016-11-24 11:36 ` [PATCH V4 06/10] PM / OPP: Add infrastructure to manage multiple regulators Viresh Kumar
[not found] ` <9ef150da6d3344d2ad4ce884f777174a3aef5dc1.1479986491.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-11-29 0:55 ` Stephen Boyd
2016-11-24 11:36 ` [PATCH V4 07/10] PM / OPP: Separate out _generic_opp_set_rate() Viresh Kumar
[not found] ` <1f8634c64ccec1d24119afea4b6bd2d7d1a911cf.1479986492.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-11-29 1:09 ` Stephen Boyd
2016-11-24 11:36 ` [PATCH V4 08/10] PM / OPP: Allow platform specific custom set_opp() callbacks Viresh Kumar
2016-11-29 1:16 ` Stephen Boyd
2016-11-24 11:36 ` [PATCH V4 09/10] PM / OPP: Don't WARN on multiple calls to dev_pm_opp_set_regulators() Viresh Kumar
2016-11-24 11:36 ` [PATCH V4 10/10] PM / OPP: Don't assume platform doesn't have regulators Viresh Kumar
[not found] ` <82cc855c7abb5d0583abe4cc9132c7e589434814.1479986492.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-11-29 1:18 ` Stephen Boyd [this message]
[not found] ` <cover.1479986491.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-11-28 13:41 ` [PATCH V4 00/10] PM / OPP: Multiple regulator support Viresh Kumar
[not found] ` <CAKohpo=fKG__Tf4LF1YZRKXsw4FdWxnP4NHyAPpKtFKcQ7GmMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-11-28 13:45 ` Rafael J. Wysocki
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